Fifteenly

What you get

• The sliding number puzzle you know: slide tiles into the empty space until the numbers are back in order. Tap a tile, or swipe on the board.
• Every scramble is solvable — each one is checked before it reaches you, so there is never a board that cannot be finished.
• 240 puzzles across six tiers, from a gentle 3×3 to a demanding 6×6, getting steadily harder within each tier.
• A new daily puzzle, the same for everyone, that ramps up through the week.
• Hints that show your next move, chosen by the real row-by-row method, and a How to play guide that teaches it in full.
• A timer, a move counter and your best times, all kept on your device.
• Light and dark themes, in 50 languages.

Quietly respectful

Fully offline. No accounts, no sign-ups, no analytics and no leaderboards. Your progress and settings stay on your phone — we run no servers and collect nothing ourselves. Ads are never personalised.

Free to play, with a small banner and optional short videos if you would like a hint or a bonus puzzle. One inexpensive purchase removes the ads for good and makes hints and bonus puzzles free. No subscriptions, ever.

Contact

Questions, feedback, or support: support@ostapenko.studio

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